/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

package Administration;

import java.beans.Statement;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.AdminData;
import model.DatabaseConnection;

/**
 *
 * @author mosta
 */
public class AdminMainCategory extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    private Connection conn;
    private Statement stmt;
    private ResultSet result;
    private PreparedStatement prepStmt;
    
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession(true);
        if (session.getAttribute("admin") == null) {
            RequestDispatcher dispatcher = request.getRequestDispatcher("admin");
            dispatcher.forward(request, response);
        }
        DatabaseConnection connection = new DatabaseConnection();
        ArrayList<AdminData> dataList = new ArrayList<AdminData>();
        conn = connection.startConnection();
        String sql="select cat_id,cat_name from category";
        try {
            prepStmt = conn.prepareStatement(sql);
            result = prepStmt.executeQuery();
            while (result.next()) 
            {
                dataList.add(new AdminData(result.getInt("cat_id"),result.getString("cat_name")));
            }
        } catch (SQLException ex) {
            Logger.getLogger(AdminMainPage.class.getName()).log(Level.SEVERE, null, ex);
        }
        finally{
            if(result!=null){
                try{ 
                  result.close();
                }catch(Exception ex) { /* */ ex.printStackTrace();}
            }
            if(stmt!=null){
                try{ 
                  prepStmt.close();
                }catch(Exception ex) { /* */ ex.printStackTrace();}
            }
            if(connection !=null){
                try{ 
                  connection.endConnection();
                }catch(Exception ex) { /* */ ex.printStackTrace();}
            }
         }
        request.setAttribute("data", dataList);
        RequestDispatcher dispatcher = request.getRequestDispatcher("adminMainCategory.jsp");
        dispatcher.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
